If you have a Macbook with limited storage on SDD and don’t want to install ubuntu on the Mac or you just want to have a movable OS with persistent storage (meaning your settings and files are stored on the drive unlike live CD) in your pocket, you have come to the right place.

In this tutorial, we are going to create a bootable usb flash drive from live ubuntu iso file, and use it to install ubuntu on a flash drive. You can use the same method to install Ubuntu on an external Hard drive or on a partition of external Hard drive.